浮点数的存储
#pragma warning(disable:4996)
#include<stdio.h>
int main()
{
        int n = 9;
        float* p = (float*)&n;
        printf("%d\n", n);
        printf("%f\n", *p);
        *p = 9.0;
        printf("%d\n", n);
        printf("%f\n", *p);
        return 0;
}
